From b39f87a89191552bcefe4386ce734477ad55cb84 Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Sat, 7 Jul 2012 13:57:19 +0000
Subject: implement -Tman .Bk; OpenBSD rev. 1.10

---
 mdoc_man.c | 41 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 36 insertions(+), 5 deletions(-)

(limited to 'mdoc_man.c')

diff --git a/mdoc_man.c b/mdoc_man.c
index de91630e..958a1e99 100644
--- a/mdoc_man.c
+++ b/mdoc_man.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_man.c,v 1.12 2012/07/07 13:53:14 schwarze Exp $ */
+/*	$Id: mdoc_man.c,v 1.13 2012/07/07 13:57:19 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -35,6 +35,7 @@
 struct	mman {
 	int		  mode_space; /* spacing mode: 1 = on */
 	int		  need_space; /* next word needs prior ws */
+	int		  mode_keep; /* currently inside a keep */
 	int		  need_nl; /* next word needs prior nl */
 };
 
@@ -49,6 +50,7 @@ struct	manact {
 static	int	  cond_body(DECL_ARGS);
 static	int	  cond_head(DECL_ARGS);
 static	void	  post_bd(DECL_ARGS);
+static	void	  post_bk(DECL_ARGS);
 static	void	  post_dl(DECL_ARGS);
 static	void	  post_enc(DECL_ARGS);
 static	void	  post_nm(DECL_ARGS);
@@ -58,6 +60,7 @@ static	void	  post_sect(DECL_ARGS);
 static	void	  post_sp(DECL_ARGS);
 static	int	  pre_ap(DECL_ARGS);
 static	int	  pre_bd(DECL_ARGS);
+static	int	  pre_bk(DECL_ARGS);
 static	int	  pre_br(DECL_ARGS);
 static	int	  pre_bx(DECL_ARGS);
 static	int	  pre_dl(DECL_ARGS);
@@ -182,8 +185,8 @@ static	const struct manact manacts[MDOC_MAX + 1] = {
 	{ NULL, NULL, NULL, NULL, NULL }, /* _Fc */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Oc */
-	{ NULL, NULL, NULL, NULL, NULL }, /* _Bk */
-	{ NULL, NULL, NULL, NULL, NULL }, /* _Ek */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
+	{ NULL, NULL, NULL, NULL, NULL }, /* Ek */
 	{ NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Fr */
@@ -225,8 +228,13 @@ print_word(struct mman *mm, const char *s)
 		 * (2) a word that is non-punctuation; and
 		 * (3) if punctuation, non-terminating puncutation.
 		 */
-		if (NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1])
-			putchar(' ');
+		if (NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
+			if (mm->mode_keep) {
+				putchar('\\');
+				putchar('~');
+			} else 
+				putchar(' ');
+		}
 
 	/*
 	 * Reassign needing space if we're not following opening
@@ -504,6 +512,29 @@ post_bd(DECL_ARGS)
 	mm->need_nl = 1;
 }
 
+static int
+pre_bk(DECL_ARGS)
+{
+
+	switch (n->type) {
+	case (MDOC_BLOCK):
+		return(1);
+	case (MDOC_BODY):
+		mm->mode_keep = 1;
+		return(1);
+	default:
+		return(0);
+	}
+}
+
+static void
+post_bk(DECL_ARGS)
+{
+
+	if (MDOC_BODY == n->type)
+		mm->mode_keep = 0;
+}
+
 static int
 pre_br(DECL_ARGS)
 {
-- 
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